I love a good food story in public health. Especially one that feels simple.
Eat this. Not that. Save your brain.
This one tries to do that. But it’s a little messier. And more interesting.
A recent study followed older adults at higher risk for cognitive decline. They looked at what people were eating, what their gut bacteria looked like, and how their thinking and memory changed over two years.
The headline sounds straightforward:
People who ate more virgin olive oil did better on cognitive tests over time.
People who ate more common, refined olive oil did worse.
It reads like virgin olive oil is better for your brain.
Wait. Isn’t olive oil just olive oil?
Not exactly. I’m not an “oil” expert but here’s my understanding:
Virgin olive oil is less processed. It keeps more of the compounds that come from the olive itself. Things like polyphenols that are often linked to anti-inflammatory and antioxidant effects.
Common olive oil is more processed. It still has similar fats, but fewer of those extra compounds.
So this study suggests something subtle but important:
It might not just be the fat.
It might be everything that comes along with it.
The Gut Shows Up. Again.
I swear, guys. The microbiome is going to become like the economy, except it’ll be, “It’s the microbiome, stupid!” I mean, it’s darn near linked to everything.
The researchers also looked at the gut microbiome. That ecosystem of bacteria we keep hearing about.
People who consumed more virgin olive oil had more diverse gut bacteria, which is often considered a sign of better gut health.
People who consumed more refined olive oil had less diversity.
And then it gets more interesting.
Some of those gut bacteria seemed to sit right in the middle of the story. As if what you eat changes your gut, and your gut helps shape what happens in your brain.
Not proven. But suggested.
So Is Olive Oil Protecting Your Brain?
Slow down, tiger.
This was not a randomized trial where people were assigned to different oils and everything else was controlled. It was an observational study.
Which means:
*folks who eat more virgin olive oil might also do other things differently
*lifestyle, education, and habits can still sneak in
*the gut findings are early and complex
Even the authors are careful about saying that.
The Part that Matters:
This is not really a story about olive oil.
It is a story about how small differences in food processing can matter. It’s a story about how the gut and brain are likely connected in ways we are still figuring out. And it reminds us that nutrition is rarely as simple as one ingredient saving the day. (But go ahead and call virgin olive oil a superfood if you want.)
The Takeaway:
If you take anything from this, it is this:
Not all olive oil is the same.
And when we talk about “healthy foods,” we are often collapsing important details.
Also, your gut is probably involved in more than you think.
And we are still early in understanding all of it.
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If you want to age-proof your brain (as much as we can age-proof our brain) if you do ONE thing, listen to my podcast with this neuroscientist who wrote a great book on the topic.
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Work with Me? Perhaps it’s a good match. ;)
You can contact Dr. Eeks at bloomingwellness.com.
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